I think the best is to let the Holy Spirit talk for Jehovah.
Chosen above all nations? Exodus 19:5, Deuteronomy 7:6, 14:2, 26:19, 28:9
"Now therefore, if ye will obey my voice indeed, and keep my covenant, then ye shall be a peculiar treasure unto me above all people: for all the earth is mine"
"For thou art an holy people unto the LORD thy God: the LORD thy God hath chosen thee to be a special people unto himself, above all people that are upon the face of the earth."
"For thou art an holy people unto the LORD thy God, and the LORD hath chosen thee to be a peculiar people unto himself, above all the nations that are upon the earth."
"And to make thee high above all nations which he hath made, in praise, and in name, and in honour; and that thou mayest be an holy people unto the LORD thy God, as he hath spoken."
"The LORD shall establish thee an holy people unto himself, as he hath sworn unto thee, if thou shalt keep the commandments of the LORD thy God, and walk in his ways."
Gentiles had forgotten God? Deuteronomy 32:15-18:
15 "But Jeshurun waxed fat, and kicked: thou art waxen fat, thou art grown thick, thou art covered with fatness; then he forsook God which made him, and lightly esteemed the Rock of his salvation.
16 They provoked him to jealousy with strange gods, with abominations provoked they him to anger.
17 They sacrificed unto devils, not to God; to gods whom they knew not, to new gods that came newly up, whom your fathers feared not.
18 Of the Rock that begat thee thou art unmindful, and hast forgotten God that formed thee."